A visible-light-induced dioxygenation of β,γ-unsaturatedoximes for the synthesis of diverse useful isoxazolines bearing a hydroxyl moiety was developed by employing graphitic carbon nitride (g-C3N4) as a heterogeneous photocatalyst under an air atmosphere. Noted that, the eminent advantages of this metal-free protocol include step economy, easy operation, a recyclable photocatalyst, external reductant-/oxidant-free
通过在空气气氛下使用石墨氮化碳 (gC 3 N 4 ) 作为非均相光催化剂,开发了一种可见光诱导的β , γ -不饱和肟的双氧合,用于合成各种有用的带有羟基的异恶唑啉。值得注意的是,这种无金属协议的显着优势包括步骤经济、易于操作、可回收的光催化剂、外部还原剂/氧化剂和温和的反应条件。此外,机理研究表明,在 gC 3 N 4的光催化作用下会产生羟基自由基。
Synthesis and pharmacological evaluation of 1,3,4-oxadiazole bearing bis(heterocycle) derivatives as anti-inflammatory and analgesic agents
oxide with allyl alcohol followed by intramolecular 1,3-diploar cycloaddition reaction of nitrile imine with carbonyl group. All the newly synthesized compounds were screened for their anti-inflammatory and analgesic activities. Among the list of compounds (7a–k) studied, 7d, 7g, 7j, and 7k exhibited excellent activity comparable to ibuprofen and aspirin at the similar dosages.
applied for the first time to the direct conversion of N−H and O−H bonds into N‐ and O‐centred radicals, enabling a general and selective oxidative radical oxyamination and dioxygenation of various β,γ‐unsaturated hydrazones and oximes. In the reaction, O2 was employed not only as a terminal oxidant but also as the oxygen source. This protocol provided efficient access to the synthesis of various synthetically
Bifunctional heterocyclic compounds and methods of making and using same
申请人:Wang Deping
公开号:US20080119419A1
公开(公告)日:2008-05-22
The invention provides a family of bifunctional heterocyclic compounds useful as anti-infective, anti-proliferative, anti-inflammatory, and prokinetic agents. The invention also provides methods of making the bifunctional heterocyclic compounds, and methods of using such compounds as anti-infective, anti-proliferative agents, anti-inflammatory, and/or prokinetic agents.